US2800987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ratchet wheel having reversible parts
Assignee: DURITE Corp
•
Filing: 1953-06-29
•
Granted: 1957-07-30
•
Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Harry A Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:30
CPC Classifications
F; F16; F16D; F16D41/00; F16D41/06; F16D41/064; F16D2041/0646
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US76328A
Cited
US951485A
Cited
US993563A
Cited
US1057495A
Cited
US1375576A
Cited
US1716750A
Cited
FR683855A
Cited
US2051385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |